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AFE88201

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Single-channel 16-bit voltage analog front end (AFE) for sensor transmitters

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Data sheet

AFE88201

ACTIVE
Data sheet Order now

Product details

Number of ADC channels 1 ADC resolution (Bps) 12 Number of DAC channels 1 DAC resolution (Bps) 16 Temperature sensing Local Number of GPIOs 7 Interface type SPI Features Integrated Temp Sensor, GPIO Operating temperature range (°C) -55 to 125 Rating Catalog ADC sampling rate (ksps) 3.84 ADC analog input range (min) (V) 0 ADC analog input range (max) (V) 2.5 DAC settling time (µs) 65 DAC output full-scale (min) (V) 1.25 DAC output full-scale (max) (V) 2.5
Number of ADC channels 1 ADC resolution (Bps) 12 Number of DAC channels 1 DAC resolution (Bps) 16 Temperature sensing Local Number of GPIOs 7 Interface type SPI Features Integrated Temp Sensor, GPIO Operating temperature range (°C) -55 to 125 Rating Catalog ADC sampling rate (ksps) 3.84 ADC analog input range (min) (V) 0 ADC analog input range (max) (V) 2.5 DAC settling time (µs) 65 DAC output full-scale (min) (V) 1.25 DAC output full-scale (max) (V) 2.5
UQFN (RRU) 24 16 mm² 4 x 4
  • Functional Safety-Capable
  • Low quiescent current: 170 µA (typical), 210 µA (maximum)
  • 16-bit or 14-bit monotonic high-performance DAC
    • DAC output range: 0 V to 2.5 V
    • Digital DAC slew-rate control
    • 4-LSB INL at 16 bits
    • 0.07% FSR (max) TUE from –40°C to +125°C
  • 12-bit 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25-V reference at 10 ppm/°C (max)
  • Internal 1.2288-MHz oscillator with clock output
  • Digital interfaces:
    • Serial peripheral interface (SPI)
    • Universal asynchronous receiver-transmitter (UART)
  • Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
  • Wide operating temperature: –55°C to +125°C
  • Functional Safety-Capable
  • Low quiescent current: 170 µA (typical), 210 µA (maximum)
  • 16-bit or 14-bit monotonic high-performance DAC
    • DAC output range: 0 V to 2.5 V
    • Digital DAC slew-rate control
    • 4-LSB INL at 16 bits
    • 0.07% FSR (max) TUE from –40°C to +125°C
  • 12-bit 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25-V reference at 10 ppm/°C (max)
  • Internal 1.2288-MHz oscillator with clock output
  • Digital interfaces:
    • Serial peripheral interface (SPI)
    • Universal asynchronous receiver-transmitter (UART)
  • Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
  • Wide operating temperature: –55°C to +125°C

The 16-bit AFE88201 and 14-bit AFE78201 ( AFEx8201) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for process-control and industrial-automation applications.

The AFEx8201 devices include most of the components required to design a 4‑mA to 20‑mA, 3‑wire or 4-wire sensor transmitter or analog output module. In addition to the highly accurate DAC, the AFEx8201 incorporate a 10-ppm/°C voltage reference and diagnostic analog-to-digital converter (ADC). To accommodate intrinsic and functional-safety concerns, external voltage-to-current conversion and power-regulation are required.

The internal diagnostic ADC is multiplexed to several internal nodes that enable an automatic self-health check. This check is capable of detecting errors or malfunctions of the internal bias sources, power regulator, voltage reference, DAC output, die temperature, and optional external voltage source. If any fault is detected from the diagnostic ADC, CRC frame-error checking, or windowed watchdog timer, the devices can optionally issue an interrupt, enter a user-specified fail-safe state, or both.

The 16-bit AFE88201 and 14-bit AFE78201 ( AFEx8201) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for process-control and industrial-automation applications.

The AFEx8201 devices include most of the components required to design a 4‑mA to 20‑mA, 3‑wire or 4-wire sensor transmitter or analog output module. In addition to the highly accurate DAC, the AFEx8201 incorporate a 10-ppm/°C voltage reference and diagnostic analog-to-digital converter (ADC). To accommodate intrinsic and functional-safety concerns, external voltage-to-current conversion and power-regulation are required.

The internal diagnostic ADC is multiplexed to several internal nodes that enable an automatic self-health check. This check is capable of detecting errors or malfunctions of the internal bias sources, power regulator, voltage reference, DAC output, die temperature, and optional external voltage source. If any fault is detected from the diagnostic ADC, CRC frame-error checking, or windowed watchdog timer, the devices can optionally issue an interrupt, enter a user-specified fail-safe state, or both.
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* Data sheet AFEx8201 16-Bit and 14-Bit Digital-to-Analog Converters (DACs) With Voltage Reference and Diagnostic ADC for Low-Power Applications datasheet PDF | HTML 06 May 2023
Functional safety information AFE78201 and AFE88201 FS FIT Rate FMD and Pin FMA PDF | HTML 06 May 2023

Design & development

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Evaluation board

AFE882H1EVM — AFE882H1 evaluation module for a 16-bit, voltage-output, precision DAC and 16-bit ADC

The AFE882H1EVM evaluation module (EVM) is a platform for evaluating the AFE882H1 product, which is a highly-integrated, high-accuracy, and low-power 16-bit digital-to-analog converters (DACs) with voltage-outputs designed for HART-enabled sensor transmitter applications and analog output modules. (...)

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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